Gauge-glass illuminator



Jan. 13, 1931. H, w` MQRREALL GAUGE GLAS 'S ILLUMINATOB Filed July 3, 1929 glass. f f

Paiemein; ,13, 1981 i HEBERTW MOREEALL, br' Mount CARME; rniinsYLvAnm. *f 't wateror steam boiler is Vin operaf =t1on,11` t'-`1fs necessary to havefthe boiler sufii ciently with water, and in order to allow the atten'dant to'determinethe amount offwaterin a' boiler, there is zalways provided a gauge glass having communication. with the; interiorc o ,fj thev lOfOiler4 `'SQ` that 'theglass f f 'will' be ffilledzto' ah'eigh-tcorresponding lto the level "of the .water in the'boiler;` n.

.many instances, the'room in'which the boiler isV located is notproperly lighted and it is very 'diflicult to see the level of the water in the glassvV Theglass is, in some instances,

illuminated by an electric bu'lb suspended (orH otherwise mounted near the glassbut it has' been found thati-if the'bulb is not shielded the glare will, 'prevent the attendant from determiningthe level of the water` in the Therefore, one object of the invention is to provide an illuminatingdevice including a bulb and ashield s'o constructed that it will be,` disl'josed-"about the bulb'andjwhile allowing,` amplelight to reach gage glass prevent the operator of avboile'r from look- Ving directly at the bulbwhen Vohserving the` V gauige. i o

illuminator in front elevation,

1v i 'the' same showing the :illminator mounted VAnother object of the invention is to so form the shield that'` it will not only prevent thelig'ht from glaringinto the eyesof an attendantbnt also serve to protectthe bulb andV 'prevent it from being accfidentally' struck and broken.` o i i 1 'Another object of the inventionis vto per-w. mit a portion of the 'Shield carrying bafiles tO be' removed so that the bafilesmay be cleaned if found necessary and also allow abnrned out bulb to belremoved and'a' new one substituted. o I' o o 'The inventionjisillnstrated in th'e accom'- panying "drawngjwherein' i i 2 F igure 1 is a View'showing theimproved 2'is a vertical'sectional View through in operativerela'tion to a ,water gauge glass.

1939;V sriar No. 375861.

t'othe; side walls -butzter'minatef fspacedwel'ation'to the rear; ed'ges 0. a walls,'1a-s 'shown in .li, igf,.`''317 so thatlthese' rear edfgefporti'ons; of'thesidefwalls may `overlap If ig; '8' is'fa transverse sectionalzview:

through the 'illuminaton and j :*Fig. A is.` a fragmentary verticalsection'a'lf view 'showing amodified 'constraction:7| fi ;7 Tl11s improved 'llluminator consists oflfa "shieldfhaving a' li'odyportioni l Vwhichzl'is shownfin Big. 3, and *i's 17formed withf side o I med loyl a rearwall 3.* -Blocks Walls '0' orined" with Va'liined ope'nings to receix're' screwl 7 *iso that the illnminator maybe` sei cnrelyv fastenedratfthe proper hei'ght' l for di-V recti'ing'light [upon the water gangefiglassi 4silret' '18 to which powerqwires 9 aref'attachel iii-the nsual manner is seeured torthe* upper wall-f 11O-- of the body portion or casing` tlifd-inallyifin :the Shield; 'as shown in; Figs; l1

the 'shieldyand intothis isocketis screwed an electric bnlhjf 1'1'Whichmayextend longiz v pasfsjontfof the'casing and be di'rectedfupon` l thezcasing isisecuredV a hoodtrl haing lside walls'l whichfoyerlap 'the forward edge :portionsZ of theside Vwalls 121 of -thef`rcaing from the side walls of thecasing; Wiiriged V nnts '171 are 'screwed 'ujon'the free ends-o'f. the bolts' and?when-ltightened `engage'jtlfie cleats' so thajtifthe hood will be ii'nily-hiit.

releasa'bly d in e'ngagement withv thecas+V vsidelwfalls of' the hood and are firnnly secured i A lation of the bafiles'to each other. i If it` is engineerand theilluminating device.

the side walls of the casing when the hood is in place. Since Vthe forward edges of Vthe side Walls of the casing bearagainst the rear edges'of the bafiles, a very firm connection between the hood'and casing Will be established When the 'securing vnuts 17 are tightcened. By referring to'Fig. 2, it will be seen that the baflies may eXt-end horizontally, and by referring to Fig. l it will be seen that thev baffies may be disposed at an incline. AV hood having hol'izontalfbaflles is usedv When the Water gaugeV glass is at such an,

Velevation that the engineer or other attendanti must look upwardly in order to seetit andV the' inclined bafiles are used When the gauge" glass is at about the level of a personls eyes.

When this'device is in use, it is mounted upon a rod 5 or inany other desirecl manner -at such a height and in such a position that when' an engineer looks at a Water gauge glass the gauge glass Will'be between the" havingithe hood provided With battles light Will be permitted to pass outwardly from the shield to illuminate gauge glass, but

these shields Willprevent the engineer from.. looking directly at .the bulb.Z Therefore, the

Vlight from the lbulb Willnot gl-are into the eyes of the engineerand prevent himfrom clearly seeing the Water'gauge. By an inspectionrof Fig; 2 Vit Will be seenthatjwhen the Water gauge .glass is in;l an elev'ated posi tion the' engineer must look upvvardly in the direction indicated by theharrowV and, theref fore, the bafiies should eXtend ;horizontally so that the engineer,Vwill'lookjfatthe under faces of the bafiies and be prevented from seeing` the bulb. VVVhen the water' gauge glass is at 'about the height of a personstand-v ing upon the ground, the direction in'which r 7the engineerwill look toWards the gauge Will i be substantially horizontal, as indicated by the varrow in Fig. 4.' Therefore,'the baflies must be disposed at an incline so that the bulb Willb'e hidden by the. overlapping renecessary tol clean thezbaflies,rthe fasteners are released; so that the hood maybe removedV after which the bafiies maybe thoroughly cleaned and the hood replaced. This vvill also permit the hood to be removed When a bulb has Vburned out and it sis necessary to Q substitute a new one. i

' VHaving thus descrlbed the invention, I claiin: i w f i 1.1 An illuininating device'of the Character described comprising aV body open at its front and having side Walls 'converging to- Ward the open front of theibody,illuminat ing' means Within said body, an Vextension through saidextension in vertically spaced relation to each other, and means to releasably secure said' extension to said body with side 'Walls of the body bearing against the rear edges of the baflles.

w 2. An illuniinating device vof the Character described comprising a body open at its front and having side walls converging ,toward the open front of the body, illuminating means With the side Walls of the body wedged. v

tightly between. the side vfalls of the exten sic-n andbearlng against rear'edges of the bafiies;

' In'testimony whereof I affix my signature. 5

HERBERT'W- MORREALL. ,[L. 8.]

for said body extending'forwardly from the 'I I open'v frontv thereof and'having side Walls;

converging forwardly and having their rear i a edge `portions voverlapping the side Walls of the body,`bafiie plates extending transversely 

